<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!-- 登录表单区 -->
      <el-form ref="loginFormRef" :rules="loginFormRules" :model="loginForm" label-width="0px" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-xingmingyonghumingnicheng"></el-input>
        </el-form-item>
        <!-- 登录密码 -->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-mima"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetloginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'change' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }

        ]
      }

    }
  },
  methods: {
    // 点击重置按钮，重置登录表单
    resetloginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async vaild => {
        if (!vaild) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登录成功')

        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }

}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box{
      height: 130px;
      width: 130px;
      border:1px solid #eee;
      border-radius: 50%;
      padding:10px;
      box-shadow:0 0 10px #ddd;
      position: absolute;
      left:50%;
      transform: translate(-50%,-50%);
      background-color: #fff;

      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color:#eee;
      }
    }
    .login_form{
      position: absolute;
      width:100%;
      padding:0 20px;
      bottom: 0;
      box-sizing:border-box;
    }

    .btns{
      display: flex;
      justify-content: flex-end;
    }
  }
</style>
